Similarly, the cold DM transfer function, \(T_{DM}(\mathrm {k})\) , is defined as [1]}, [2]}.
\(T_{DM}(\mathrm {k})&=&\frac{{L_{0}}}{{L_{0}+C_{0}q^{2}}}\,,\quad {L_{0}}={\ln (5.436+1.8q)},\nonumber \\{C_{0}}&=&14.2+\frac{731}{1+62.5{q}},\quad {q}=\frac{\mathrm {k}}{h\Gamma },\) 
